On 15.07.19 16:38, Florian Eckert wrote: > I plugged in a mpcie usb modem. > In my test case it was a EC25 from Quectel in mpcie2 port. > After that I did a reboot and exported the gpio via "/sys/class/gpio" > Then I executed the command "echo 0 > /sys/class/gpio/<name>/value" and > "echo 1 > /sys/class/gpio/<name>/value". > Then I have seen the log message in the kernel that the device did an > unregistration/registration hmm, did the same, tried both gpios (mpcie2_reset, mpcie3_reset), but nothin happened. But strange: I'm missing some hw, modem doesn't appear ... I'll have to check again whether i've got unstable hw or missing some kernel config. --mtx -- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@xxxxxxxxx -- +49-151-27565287